Guide to CNC Lathe Machine CNC Lathe Machine Programming Examples

Guide to CNC Lathe Machine


CNC Lathe Machine Programming Examples



Contents: 

1. What is a CNC Lathe Machine?
2. CNC Lathe Main Parts
3. CNC Programming Software
4. Examples: Sinumerik 810 Programming Example CNC Mill
5. Examples: CNC Programming Example G Code G02 Circular Interpolation Clockwise
6. Examples: Chamfer and Radius Programming with G01 G code
7. Examples: CNC Mill Program with G41 Cutter Radius Compensation Left
8. Examples: How to Mill Full Circle CNC Program Example Code
9. Examples: Siemens Sinumerik Milling Programming Example
10. Examples: Lathe CNC Programming Example
11. Examples: CNC Mill Programming Exercise using G91 Incremental Programming
12. Examples: CNC Mill G02 G03 Circular Interpolation Programming Example
13. Examples: CNC Programming for Beginners a CNC Programming Example
14. Examples: Simple CNC Lathe Drilling with Fanuc G74 Peck Drilling Cycle
15. Examples: CNC Mill Contour Pecking – Fanuc Subprogram Repeat Example
16. Examples: CNC Mill Programming Exercise using G90 Absolute Programming G91 Incremental Programming
17. Examples: CNC Mill Programming Absolute Incremental G90 G91 Example Code
18. Examples: CNC Programming Example in Inch Simple CNC Lathe Program
19. Examples: CNC Milling Machine Programming Example for Beginners
20. Examples: CNC Lathe Simple G Code Example – G code Programming for Beginners
21. Examples: CNC Programming for Beginners a Simple CNC Programming Example

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[Ebooks] Advanced Excel Functions

Advanced Excel Functions





Advanced Excel Functions Tutorial


You can use Excel functions to perform various mathematical, statistical, logical calculations. This tutorial takes you step-by-step through the process.

This tutorial is intended for people who use Excel but are intimidated by the concept of formulas and functions.

  • Compatibility Functions
  • Cube Functions
  • Database Functions
  • Function and Description
  • Date & Time Functions
  • Engineering Functions
  • Financial Functions
  • Information Functions
  • Logical Functions
  • Lookup and Reference Functions
  • Math and Trigonometric Functions
  • Statistical Functions

>> READ NOW!


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Reference books ICT

Reference books ICT 

Reference books ICT

Reference books ICT 


List of related ebooks. Click on the title of the book to see the details.


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CNC Mill Programming Absolute Incremental G90 G91 Example Code

Following is a cnc program exmaple code for cnc milling machine.

This cnc example code illustrates the usage of CNC Absolute Programming G90 G-Code and Incremental Programming G91 G-Code, as well as the usage of Circular Interpolation G-Code (G02/G03).
This cnc program draws (machines) cnc mill Arc with R as well as Arc with I.

CNC Absolute Programming G90 Example Code


CNC Mill Programming Absolute Incremental G90 G91 Example Code
Mill Circular Interpolation G02 G03 with R
G92 X200 Y40 Z0
G90 G03 X140 Y100 R60 F300
G02 X120 Y60 R50
Mill Circular Interpolation G02 G03 with I
G92 X200 Y40 Z0
G90 G03 X140 Y100 I-60 F300
G02 X120 Y60 I-50

CNC Incremental Programming G91 Example Code

Mill Circular Interpolation G02 G03 with R
G91 G03 X-60 Y60 R60 F300
G02 X-20 Y-40 R50
Mill Circular Interpolation G02 G03 with I
G91 G03 X-60 Y60 I-60 F300
G02 X-20 Y-40 I-50

 


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[CNC Programming Examples] Fanuc Macro Programming

Fanuc Macro Programming





Fanuc Lathe Custom Macro for Peck Drilling


Fanuc Peck Drilling Macro

Move the tool beforehand along the X- and Z-axes to the position where a drilling cycle starts. Specify Z or W for the depth of a hole, K for the depth of a cut, and F for the cutting feedrate to drill the hole.
Following Custom Macro works on Fanuc cnc controls like FANUC Series 30i/31i/32i-MODEL A

Programming


G65 P9100 Z K F
OR
G65 P9100 W K F
Parameter Description
Z Hole depth (absolute programming)
W Hole depth (incremental programming)
K Cutting amount per cycle
F Cutting feedrate


Custom Macro


Main Program


G50 X100.0 Z200.0 ;
G00 X0 Z102.0 S1000 M03 ;
G65 P9100 Z50.0 K20.0 F0.3 ;
G00 X100.0 Z200.0 M05 ;
M30

Macro program


O9100;
#1=0; (Clear the data for the depth of the current hole.)
#2=0; (Clear the data for the depth of the preceding hole.)
IF [#23 NE #0] GOTO 1; (If incremental programming, specifies the jump to N1.)
IF [#26 EQ #0] GOTO 8; (If neither Z nor W is specified, an error occurs.)
#23=#5002-#26;         (Calculates the depth of a hole.)
N1 #1=#1+#6;           (Calculates the depth of the current hole.)
IF [#1 LE #23] GOTO 2; (Determines whether the hole to be cut is too deep?)
#1=#23;                (Clamps at the depth of the current hole.)
N2 G00 W-#2;           (Moves the tool to the depth of the preceding hole at the cutting feedrate.)
G01 W- [#1-#2] F#9;    (Drills the hole.)
G00 W#1;               (Moves the tool to the drilling start point.)
IF [#1 GE #23] GOTO 9; (Checks whether drilling is completed.)
#2=#1;                 (Stores the depth of the current hole.)
N9 M99
N8 #3000=1;            (NOT Z OR U COMMAND Issues an alarm.)





Make your own G81 Drilling Cycle through Fanuc Macro and G66 Modal Call


This is a complete Fanuc Macro which works same as Fanuc G81 Drilling Cycle.

G66 Modal Call

Once Fanuc G66 is issued to specify a modal call a macro is called after a block specifying movement along axes is executed. This continues until G67 is issued to cancel a modal call.

Macro Call Parameters

G65 P9110 X x Y y Z z R r F f L l ;
X: X coordinate of the hole (absolute only) . . . (#24)
Y: Y coordinate of the hole (absolute only) . . . (#25)
Z: Coordinates of position Z (absolute only). . . (#26)
R: Coordinates of position R (absolute only). . . (#18)
F : Cutting feedrate . . . . . . . . . . . . . . . . . . . .. . . (#9)
L: Repetition count

Program Example

O0001;
G28 G91 X0 Y0 Z0;
G92 X0 Y0 Z50.0;
G00 G90 X100.0 Y50.0;
G66 P9110 Z–20.0 R5.0 F500;
G90 X20.0 Y20.0;
X50.0;
Y50.0;
X70.0 Y80.0;
G67;
M30;

Drilling Macro

O9110;
#1=#4001;   (Stores G00/G01)
#3=#4003;   (Stores G90/G91)
#4=#4109;   (Stores the cutting feedrate)
#5=#5003;   (Stores Z coordinate at the start of drilling)
G00 G90 Z#18;   (Positioning at position R)
G01 Z#26 F#9;   (Cutting feed to position Z)
IF[#4010 EQ 98]GOTO 1;  (Return to position I)
G00 Z#18;   (Positioning at position R)
GOTO 2;
N1 G00 Z#5;   (Positioning at position I)
N2 G#1 G#3 F#4;  (Restores modal information)
M99;

Fanuc Bolt Hole Circle Custom Macro (BHC)


 

Drawing/Image



CNC Program

/*Parameters
G65 P9100 Xx Yy Zz Rr Ff Ii Aa Bb Hh
X: X coordinate of the center of the circle (#24)
Y: Y coordinate of the center of the circle (#25)
Z: Hole depth (#26)
R: Coordinates of an approach point (#18)
F: Cutting feedrate (#9)
I: Radius of the circle (#4)
A: Drilling start angle (#1)
B: Incremental angle (Clockwise when negative value) (#2)
H: Number of holes (#11)
*/

O9100
#3=#4003
G81 Z#26 R#18 F#9 K0
IF[#3 EQ 90]GOTO 1
#24=#5001+#24
#25=#5002+#25
N1 WHILE[#11 GT 0]DO 1
#5=#24+#4*COS[#1]
#6=#25+#4*SIN[#1]
G90 X#5 Y#6
#1=#1+#2
#11=#11-1
END 1
G#3 G80
M99

/*Fanuc Bolt Hole Macro Example
Example macro call to drill 5 holes at intervals of 45 degrees
after a start angle of 0 degrees
on the circumference of a circle with radius 4”.
The absolute center of the circle is (10”, 5”).*/
O0002
G90 G92 X0 Y0 Z4.0
G65 P9100 X10.0 Y5.0 R1.0 Z-2.0 F20 I4.0 A0 B45.0 H5
M30













G65 Macro for Internal Elipse


 

Drawing/Image


CNC Program

T1 M6
G0 G90 G40 G21 G17 G94 G80
G54 X0 Y0 S? M3
G43 Z5 H?
G1 Z-? F?
#20 = 2 ; Incremental degree calculation
#21 = 0 ; Start Angle
#22 = 30 ; Y Axis Radius
#23 = 50 ; X Axis Radius
G41 X#23 D? ; Compensation motion to right side of internal pocket
N10 #21 = [#21 + #20] ; Angular Count
#24 = SIN[#21] ; Incremental Y axis calculation
#25 = COS[#21] ; Incremental X axis calculation
#24 = [#24*#22] ; Absolute Y calculation
#25 = [#25*#23] ; Absolute X calculation
X#25 Y#24 ; Movement in X & Y axis
IF [#21 LT 360] GOTO 10 ; Restart if less than 360 degree motion
IF [#21 GT 360] GOTO 20 ; If final angle becomes greater than 360 degrees recalculate
IF [#21 EQ 360] GOTO 30 ; Finish if total angle is equal to 360 degree
N20 #21 = 360
GOTO 10
N30 G40 X0
G0 G90 Z100 M30

G65 Macro for an Increasing Radius


Drawing/Image


CNC Program

;A = #1 (Start Angle 0 degrees)
;B = #2 (Start Radius)
;C = #3 (Increment angle for accuracy calculations.)
;I = #4 (Finish Angle)
;J = #5 (Finish radius)
;K = #6 (Milling feed)

O2222
T5 M6
G0 G90 G40 G21 G17 G94 G80
G54 X35 Y0 S500 M3
G43 Z100 H?
Z5
G1 Z-0.5 F200
G65 P8999 A0 B35 C0.01 I70 J37 K500
G0 G90 Z100 M30

O8999
#7 = #4 / #3 ;1) Total no. of moves 70 / 0.01
#8 = [[#5 - #2] / #7] ;2) Increase in radius 37-35/7000
N1 #2 = #2 + #8 ;3) Next Radius i.e. 35+inc. radius.
#1 = #1 + #3 ;4) Increase in angle
#9 = #2 * COS [ #1 ] ;5) New X axis position
#10 = #2 * SIN [ #1 ] ;6) New Y axis position
G1 X#9 Y#10 F#6 ;7) Feed move to new positions
;8) If new angle is less than finish angle go to line N1.
IF [#1 LT #4] GOTO 1
G0 Z10
M99

G65 Macro for Internal Helical


CNC Program

T? M6 (THREADMILL)
G0 G90 G40 G21 G17 G94 G80
G54 X? Y? S? M3 (Move to bore centre)
G43 Z? H?
;
G65 P1002 A? B? D?
(A = THREAD DIAMETER)
(B = PITCH)
(D = RADIUS OFFSET NUMBER)
M30

O1002
#11=[[#1*0.8]/2]
#12=[[#1/2]-#11]
;
G91 Y#12
G41 X#11 D#7
G3 X-#11 Y#11 R#11 Z#2/4
J-[#1/2] Z#2
X-#11 Y-#11 R#11 Z#2/4
G1 G40 X#11
G0 G90 Z100
M99

G65 Macro for a Counterbore


 

CNC Program

T? M6 (ENDMILL)
G0 G90 G40 G21 G17 G94 G80
G54 X? Y? S? M3 (Move to bore centre)
G43 Z? H?
;
G65 P1001 A? D?
(A = C/BORE DIAMETER)
(D = RADIUS OFFSET NUMBER)
M30

O1001
#11=[[#1*0.8]/2]
#12=[[#1/2]-#11]
G91 Y#12
G41 X#11 D#7
G3 X-#11 Y#11 R#11
J-[#1/2]
X-#11 Y-#11 R#11
G1 G40 X#11
G0 G90 Z100
M99
 
 
 
 


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